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Finding the Fourth Proportional to 19,884, 27,439.92 and 11,501.04

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Solution

The fourth proportional to 19,884, 27,439.92 and 11,501.04 is: 15,871.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,884 : 27,439.92 = 11,501.04 : x
  2. Step 2: Convert to fraction form
    19,884/27,439.92 = 11,501.04/x
  3. Step 3: Cross multiply
    19,884x = 27,439.92 × 11,501.04
  4. Step 4: Simplify right side
    19,884x = 315,587,617.52
  5. Step 5: Solve for x
    x = 315,587,617.52/19,884
  6. Step 6: Final answer
    x = 15,871.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.